Thank you very much. I do follow up your advise and update the theme. So now my circumference is 1.0.4.
I retry testing website opening speed via http://www.webpagetest.org but unfortunately to tell,now it looks more slowly
to open. Sorry about this. Attached is the screen cut from test result. you will see this file still take much time to run:
I am very curious and tried to find this file from folder but actually there is no this file any.
So do you know how to fix this problem ? Thank you in advance.